Abstract
It is desirable to equip soft-smart materials and structures with actuation, sensing, and adhesion functionalities. A multifunctional stretchable bifilar coil capable of soft adhesion and sensing is presented in this work. The fully-soft flat bifilar coil, based on the Tesla coil design, can be fabricated by encapsulating a cost-effective, easy-to-implement, and scalable liquid-metal-elastomer-tube in a soft planar composite. By combining pneumatic actuation of the soft coil with application of a high voltage across the two electrodes, a morphologically adaptive and soft electroadhesive is demonstrated and can be used to lift lightweight and flexible textiles from curved surfaces. At the same time, capacitive, resistive, and inductive sensing functionalities can be achieved by interrogating the bifilar coil. This stretchable bifilar coil has the potential to enable soft multimodal adhesives such as entirely-soft electro-magneto adhesives with incorporated soft resistive, capacitive, and inductive sensing for soft robotics and implantable devices.
Highlights
It is desirable to equip soft-smart materials and structures with actuation, sensing, and adhesion functionalities
A multifunctional stretchable bifilar coil capable of soft adhesion and sensing is presented in this work
One was coated with double-sided tapes so that the two Galinstan-silicone tubes can be adhered onto the plate
Summary
It is desirable to equip soft-smart materials and structures with actuation, sensing, and adhesion functionalities. A multimodal, soft sensor capable of resistive, capacitive, and inductive sensing is demonstrated. A multifunctional stretchable bifilar coil capable of soft adhesion and sensing is presented in this work.
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